You do have a say, and companies already answer to more than just their shareholders. See [0] for instance:

    “In recent years, large technology companies have been investigated for colluding
     with a secret agreement not to hire one another’s best workers; **fined billions** of
     dollars for unfairly favoring certain services on their platforms over other rivals;
     and been accused of mishandling sensitive consumer information or of obtaining new 
     customers under false pretenses,”

So this naive idea that companies run amok without recourse is political theatre in the clothing of concern.

Finally, and I hate to bring this up, but if you don't like it, then quit. That's what I did to start a business. It's tough and it's stressful, and some days are just no fun at all and I wonder what the heck I did. But it's my company, and I only answer to my clients. Yes, I am the shareholder, but honestly, what's in my best interest is serving my clients better than my competition.

    I am the labor and the shareholder.

Yes, it comes with issues, but so does everything. If you don't like the control a company has over you, then leave. And before anyone says "I can't leave because....", remember, if you get fired, you've still left, and you still have to deal with those same "..." issues. So yes, you can leave. It may be uncomfortable as hell, but you can. You'll be amazed at how hard you will work for a single dollar when it's your own firm. I've never worked this hard for another company. Ever.

[0] https://www.washingtonpost.com/blogs/right-turn/wp/2018/07/2...